Title:
OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/261685
Kind Code:
A1
Abstract:
This optical device comprises a light detector, an optical system, and a control circuit that controls the light detector and the optical system. In the optical system, light arriving from one direction, from light arriving from the outside, is caused to impinge on the light detector. By controlling the optical system, the control circuit: changes a detection direction, which is the direction of arriving light detected by the light detector; changes the focal distance of the optical system in tandem with the change in the detection direction; causes light arriving from an object positioned in the one detection direction to be detected by the light detector in two or more states in which the focal distances of the optical system differ from each other; and generates information pertaining to the distance to the object on the basis of two or more light detection amounts that were respectively detected by the light detector in the two or more states.
Inventors:
NISHIWAKI SEIJI
Application Number:
PCT/JP2020/014466
Publication Date:
December 30, 2020
Filing Date:
March 30, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01B11/02; G01C3/06; G02B5/18
Domestic Patent References:
| WO2015001770A1 | 2015-01-08 |
Foreign References:
| JP2007333458A | 2007-12-27 | |||
| JPH05240640A | 1993-09-17 | |||
| JPH04168427A | 1992-06-16 | |||
| US20020076129A1 | 2002-06-20 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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